Clients need to upgrade the CLR.NET Framework (for example, from 1.1 to 2.0) to run applications with 4 applications?
Yes, if you configure .NET 4.0 with the new CLR. However, you can customize the framework to 4.0 to avoid this and work with the previous version of the CLR.
: (VS 2010 .NET 4 Series).
.NET 2.0 , ASP.NET, 2.0, :
, VS- VS, ASP.NET 2.0 ( VS 2010 CLR 2.0)
.NET 4.0 , , ASP.NET 4.0.
ASP.NET 2.0 3.5 ?
. , , .
, Multi-Targeting ASP.NET 4.0 ASP.NET 4.0 Web.config: <compilation targetFramework="4.0"/>. , . , , :
.NET Framework 4 , ASP.NET .NET Framework 4 , Web.config targetFramework Web.config. ( , .NET Framework 4.)
.